>>I don’t reccomend it unless you have a degree in chemical engineering.
Actually a degree in chemical engineering would guarantee that you blow yourself up. You would need good lab practices to safely handle the chemicals and that comes from experience as a chemist and not as an engineer.
But, people with the necessary lab experience do exist and since primers are the choke point in the ammunition manufacturing supply chain, it would be good if someone outside of the government-monitored industry found a safe way to manufacture them. After all, percussion caps aren’t some modern thing that can only be made in a billion-dollar factory. They made them in the mid 1800’s in factories that are a lot more primitive than most people’s workshops today.
But primers, and their components are normally manufactured by carefully controlled automated processes, requiring an engineer to design them, by law.